Part A & Part B sign up periods

When you first get Medicare

When you're first eligible for Medicare, you have a 7-month Initial Enrollment Period to sign up for Part A and/or Part B.

Example

For example, if you're eligible for Medicare when you turn 65, you can sign up during the 7-month period that:

Begins 3 months before the month you turn 65

Includes the month you turn 65

Ends 3 months after the month you turn 65

Note

If you aren’t automatically enrolled, you can sign up for free Part A (if you’re eligible) any time during or after your Initial Enrollment Period starts. Your coverage start date will depend on when you sign up. If you have to buy Part A and/or Part B, you can only sign up during a valid enrollment period.

Note

If you wait until the month you turn 65 (or the 3 months after you turn 65) to enroll, your Part B coverage will be delayed. This could cause a gap in your coverage.

In most cases, if you don’t sign up for Medicare Part B when you’re first eligible, you’ll have to pay a late enrollment penalty. You'll have to pay this penalty for as long as you have Part B and could have a gap in your health coverage.

Special circumstances (Special Enrollment Periods)

based on current employment, you have a SEP to sign up for Part A and/or Part B anytime as long as:

You or your spouse (or family member if you're disabled) is working.

You're covered by a group health plan through the employer or union based on that work.

You also have an 8-month SEP to sign up for Part A and/or Part B that starts at one of these times (whichever happens first):

The month after the employment ends

The month after group health plan insurance based on current employment ends

Usually, you don't pay a late enrollment penalty if you sign up during a SEP.

Note

COBRA and retiree health plans aren't considered coverage based on current employment. You're not eligible for a Special Enrollment Period when that coverage ends. This Special Enrollment Period also doesn't apply to people who are eligible for Medicare based on having

If you have a Health Savings Account (HSA) with a High Deductible Health Plan (HDHP) based on your or your spouse’s current employment, you may be eligible for an SEP. To avoid a tax penalty, you should stop contributing to your HSA at least 6 months before you apply for Medicare. You can withdraw money from your HSA after you enroll in Medicare to help pay for medical expenses (like deductibles, premiums, coinsurance or copayments). If you’d like to continue to get health benefits through an HSA-like benefit structure after you enroll in Medicare, a Medicare Advantage Medical Savings Account (MSA) Plan might be an option.

You may also qualify for a Special Enrollment Period for Part A and Part B if you're a volunteer, serving in a foreign country.

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